测锅具温度检测电路cN4插口(2)脚对地电压为+0.25V,正常;测IGBT温度检测电路CN3插口(1)脚对地电压为0V(正常为+0.35V)。用R×10k挡测IGBT温度检测电路,发现热敏电阻开路受损。更换热敏电阻后整机恢复正常。 |
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